1284104861 has 8 divisors (see below), whose sum is σ = 1383917304. Its totient is φ = 1184440320.

The previous prime is 1284104827. The next prime is 1284104893. The reversal of 1284104861 is 1684014821.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 67141636 + 1216963225 = 8194^2 + 34885^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1284104861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284104161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18596 + ... + 53981.

It is an arithmetic number, because the mean of its divisors is an integer number (172989663).

Almost surely, 2^1284104861 is an apocalyptic number.

It is an amenable number.

1284104861 is a deficient number, since it is larger than the sum of its proper divisors (99812443).

1284104861 is a wasteful number, since it uses less digits than its factorization.

1284104861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73951.

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 1284104861 is about 35834.4088970364. The cubic root of 1284104861 is about 1086.9264651118.

The spelling of 1284104861 in words is "one billion, two hundred eighty-four million, one hundred four thousand, eight hundred sixty-one".